BaseResourcesBuildProvider.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Compilation / BaseResourcesBuildProvider.cs / 1590284 / BaseResourcesBuildProvider.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Compilation { 
 
using System;
using System.Resources; 
using System.Resources.Tools;
using System.Reflection;
using System.Globalization;
using System.Collections; 
using System.IO;
using System.Xml; 
using System.Xml.Schema; 
using System.CodeDom;
using System.CodeDom.Compiler; 
using System.Web.Configuration;
using System.Web.Hosting;
using System.Web.Compilation;
using System.Web.UI; 
using System.Web.Util;
using Util=System.Web.UI.Util; 
 
/// Base class for BuildProviders that generate resources
[BuildProviderAppliesTo(BuildProviderAppliesTo.Resources)] 
internal abstract class BaseResourcesBuildProvider : BuildProvider {

    internal const string DefaultResourcesNamespace = "Resources";
 
    // The generated namespace and type name
    private string _ns; 
    private string _typeName; 

    private string _cultureName; 
    private bool _dontGenerateStronglyTypedClass;

    internal void DontGenerateStronglyTypedClass() {
        _dontGenerateStronglyTypedClass = true; 
    }
 
    public override void GenerateCode(AssemblyBuilder assemblyBuilder) { 

        _cultureName = GetCultureName(); 

        if (!_dontGenerateStronglyTypedClass) {
            // Get the namespace and type name that we will use
            _ns = Util.GetNamespaceAndTypeNameFromVirtualPath(VirtualPathObject, 
                (_cultureName == null) ? 1 : 2 /*chunksToIgnore*/, out _typeName);
 
            // Always prepend the namespace with Resources. 
            if (_ns.Length == 0)
                _ns = DefaultResourcesNamespace; 
            else
                _ns = DefaultResourcesNamespace + "." + _ns;
        }
 
        // Get an input stream for our virtual path, and get a resource reader from it
        using (Stream inputStream = OpenStream()) { 
            IResourceReader reader = GetResourceReader(inputStream); 

            try { 
                GenerateResourceFile(assemblyBuilder, reader);
            }
            catch (ArgumentException e) {
                // If the inner exception is Xml, throw that instead, as it contains more 
                // useful info
                if (e.InnerException != null && 
                    (e.InnerException is XmlException || e.InnerException is XmlSchemaException)) { 
                    throw e.InnerException;
                } 

                // Otherwise, so just rethrow
                throw;
            } 

            // Skip the code part for satellite assemblies, or if dontGenerate is set 
            if (_cultureName == null && !_dontGenerateStronglyTypedClass) 
                GenerateStronglyTypedClass(assemblyBuilder, reader);
        } 
    }

    protected abstract IResourceReader GetResourceReader(Stream inputStream);
 
    private void GenerateResourceFile(AssemblyBuilder assemblyBuilder, IResourceReader reader) {
 
        // Get the name of the generated .resource file 
        string resourceFileName;
        if (_ns == null) { 
            // In the case where we don't generate code, just name the resource file
            // after the virtual file
            resourceFileName = UrlPath.GetFileNameWithoutExtension(VirtualPath) + ".resources";
        } 
        else if (_cultureName == null) {
            // Name the resource file after the generated class, since that's what the 
            // generated class expects 
            resourceFileName = _ns + "." + _typeName + ".resources";
        } 
        else {
            // If it's a non-default resource, include the culture in the name
            resourceFileName = _ns + "." + _typeName + "." + _cultureName + ".resources";
        } 

        // Make it lower case, since GetManifestResourceStream (which we use later on) is 
        // case sensitive 
        resourceFileName = resourceFileName.ToLower(CultureInfo.InvariantCulture);
 
        Stream outputStream = null;

        try {
            try { 
                try {
                } 
                finally { 
                    // Put the assignment in a finally block to avoid a ThreadAbortException from
                    // causing the created stream to not get assigned and become leaked (Dev10 bug 844463) 
                    outputStream = assemblyBuilder.CreateEmbeddedResource(this, resourceFileName);
                }
            }
            catch (ArgumentException) { 
                // This throws an ArgumentException if the resource file name was already added.
                // Catch the situation, and give a better error message (VSWhidbey 87110) 
 
                throw new HttpException(SR.GetString(
                    SR.Duplicate_Resource_File, VirtualPath)); 
            }

            // Create an output stream from the .resource file
            using (outputStream) { 
                using (ResourceWriter writer = new ResourceWriter(outputStream)) {
                    // Enable resource writer to be target-aware 
                    writer.TypeNameConverter = System.Web.UI.TargetFrameworkUtil.TypeNameConverter; 

                    // Copy the resources 
                    foreach (DictionaryEntry de in reader) {
                        writer.AddResource((string)de.Key, de.Value);
                    }
                } 
            }
        } 
        finally { 
            // Always close the stream to avoid a ThreadAbortException from causing the stream
            // to be leaked (Dev10 bug 844463) 
            if (outputStream != null) {
                outputStream.Close();
            }
        } 
    }
 
    private void GenerateStronglyTypedClass(AssemblyBuilder assemblyBuilder, IResourceReader reader) { 

        // Copy the resources into an IDictionary 
        IDictionary resourceList;
        using (reader) {
            resourceList = GetResourceList(reader);
        } 

        // Generate a strongly typed class from the resources 
        CodeDomProvider provider = assemblyBuilder.CodeDomProvider; 
        string[] unmatchable;
        CodeCompileUnit ccu = StronglyTypedResourceBuilder.Create( 
            resourceList, _typeName, _ns,
            provider, false /*internalClass*/, out unmatchable);

        // Ignore the unmatchable items.  We just won't generate code for them, 
        // but they'll still be usable via the ResourceManager (VSWhidbey 248226)
 
// We decided to cut support for My.Resources (VSWhidbey 358088) 
#if OLD
        // generate a My.Resources.* override (VSWhidbey 251554) 
        CodeNamespace ns = new CodeNamespace();
        ns.Name = "My." + _ns;

        CodeTypeDeclaration type = new CodeTypeDeclaration(); 
        type.Name = _typeName;
        CodeTypeReference baseType = new CodeTypeReference(_ns + "." + _typeName); 
 
        // Need to use a global reference to avoid a conflict, since the classes have the same name
        baseType.Options = CodeTypeReferenceOptions.GlobalReference; 
        type.BaseTypes.Add(baseType);

        ns.Types.Add(type);
        ccu.Namespaces.Add(ns); 
#endif
 
        // Add the code compile unit to the compilation 
        assemblyBuilder.AddCodeCompileUnit(this, ccu);
    } 

    private IDictionary GetResourceList(IResourceReader reader) {

        // Read the resources into a dictionary. 
        IDictionary resourceList = new Hashtable(StringComparer.OrdinalIgnoreCase);
        foreach(DictionaryEntry de in reader) 
            resourceList.Add(de.Key, de.Value); 

        return resourceList; 
    }
}

} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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